/Engine/Source/Runtime/Engine/Public/Physics/SimpleSuspension.h
Compute suspension compressions, individual spring forces, and the total force that the suspension system wants to apply to the body. Actual application of this force must be done by someone else.
void Update ( const FTransform & LocalToWorld, const FVector & LinearVelocity, const FVector & AngularVelocityRad, const FSimpleSuspensionRaycast & RaycastFunction )